矾山磷矿中深孔一次爆破成井孔网参数优化  

Optimization of Hole Network Parameters for Deep Hole Blasting in Fanshan Phosphate Mine

作　　者：吴旭 Wu Xu(Hebei Fanshan Phosphate Mine Co.,Ltd.,Zhangjiakou Hebei 075600,China)

机构地区：[1]河北省矾山磷矿有限公司,河北张家口075600

出　　处：《山西冶金》2024年第1期105-107,共3页Shanxi Metallurgy

摘　　要：矾山磷矿原采用YGZ-90型钻机、QZJ-100B潜孔钻机钻凿65 mm、100 mm孔径中深孔一次爆破成井,由于西区矿房切割井施工量大、爆破成井率低,制约西区充填法采矿生产能力。为解决矿房切割井成井速度慢、成本高、成功率低的问题,设计对一次爆破成井孔网参数进行调整和优化。确定了合理可行的掏槽方式及孔网参数、分段爆破高度、装药结构及装药量、起爆顺序及延期时间。据现场统计分析,一次爆破成井效果良好,可推广应用。The Fanshan Phosphate Mine originally used YGZ-90 drilling rig and QZJ-100B down-hole drilling rig to drill 65 mm and 100 mm medium deep holes through one-time blasting.However,due to the large construction volume and low blasting completion rate of the cutting wells in the western mining area,the production capacity of the filling method mining in the western area is restricted.To solve the problems of slow completion speed,high cost,and low success rate of mining room cutting wells,this paper designs to adjust and optimize the parameters of a single blasting well network.Reasonable and feasible excavation methods and hole network parameters,segmented blasting height,charging structure and quantity,detonation sequence and delay time have been determined.According to on-site statistical analysis,the effect of a single blasting on well completion is good and can be promoted and applied.

关 键 词：一次爆破成井 切割井 孔网参数 装药结构 延期时间 

分 类 号：TD78[矿业工程—矿井通风与安全]